| 摘要 |
FIELD: metallurgy.SUBSTANCE: invention can be used for production of casts by method of casting on molten models. Composition contains a liquid ceramic mass and ceramic material for dusting. Liquid ceramic mixture contains, wt%: 50-75 % - ceramic material, which is a mixture with particle size distribution, containing at least 90 % particles with size less than 0.04 mm, havin following phase composition: 30-90 % forsterite MgSiO, 5-15 % fiyalite FeSiOand 5-65 % of mixture of phase components, such as chrysolite 2(MgFe) SiO, enstatite MgSiO, tremolite CaMgSiO(OH), ringwoodite (Mg,Fe), diopside Ca(Mg,Al)(Si,Al)Oand other, and 25-50% binder containing aqueous or aqueous-organic colloidal solution of metal oxide and modifiers. Ceramic material for dusting is a mixture, having following phase composition, wt%: 30-90% forsterite MgSiO, 5-15 % fayalite FeSiOand 5-65 % of mixture of phase components, such as chrysolite 2(MgFe)SiO, enstatite MgSiO, tremolite CaMgSiO(OH), ringwoodite (Mg,Fe), diopside Ca(Mg,Al)(Si,Al)Oand others.EFFECT: preventing breakdown of moulds when filling with metal and possibility of directional solidification of castings.1 cl, 4 ex |
